Prethodno priopćenje
THE IMPACT OF FUME PARTICLES GENERATED DURING MMAW WELDING WITH CR-NI RUTILE ELECTRODE ON THE WORKERS’ HEALTH AND PROTECTION
Razija Begić
; Tehnički fakultet, Univerzitet u Bihaću, Bihać, BiH
Azra Imamović
; Farmaceutski fakultet, Univerzitet u Sarajevu, Sarajevo, BiH
Ramo Halilagić
; Tehnički fakultet, Univerzitet u Bihaću, Bihać, BiH
Sažetak
Welding fumes are generated during most types of MMAW welding. The most harmful substances in welding fumes using CrNi electrodes are hexavalent chromium (Cr VI), Ni, Mo, Mn, etc. with many other substances in welding fumes also proven harmful. The unwanted impacts include acute and chronic effects on the respiratory system as well as carcinogenic effects. Experimental studies were carried out using 6 laboratory ultra LEGe CrNi rutile electrodes manufactured according to the formula developed in the lab of company ''ELEKTRODA'' Zagreb manufacturing auxiliary welding supplies. They are a variation of the commercial electrode of the EN class, E 23 12 2 LR 12. Quality and quantity of the chemical composition of the generated fume particles in MMAW welding with the aforementioned electrodes was determined. The procedure was performed in the welding chamber made specifically for the purpose, according to the norm EN ISO 15011. The fume particle analysis was carried out using several spectroscopic methods: AAS, SEM-EDS and XPS methods, at the “Kemal Kapetanović” Metallurgy Institute in Zenica and at IMT – Institute for Materials and Technologies in Ljubljana. The analysis of results obtained for each experimental electrode yielded conclusions regarding possible use. A second aspect of the problem of welding fumes focuses on the implementation of suitable protection measures for the welder and the environment, in keeping with the regulations on the protection and safety at work in the concrete conditions of the workplace.
Ključne riječi
welding fumes; particles; ultra LEGe CrNi electrodes; health protection
Hrčak ID:
104717
URI
Datum izdavanja:
2.7.2013.
Posjeta: 2.531 *